1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c35d517d1e6cb1a293a2b26fa3fe6926cf36b008d8a8fcddf45a42e6805d5f9. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0fe79e45-7dcb-4cd5-83f6-251d7c57a1a3.json and https://artists.proofprofile.net/proofs/artist/0fe79e45-7dcb-4cd5-83f6-251d7c57a1a3.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9308ac923d6375e70790820471d11e282a1e9b977f82b188333dc5a1f44a202. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T08:50:01Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USQY51153893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbaf3d2d48645ec55e377541ccd2119639f464bee32f746b1bb195476144266b1. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USTC10777739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5de234148f9240c5612338b476662f37b7d0ba2facf1531869d55f8cdf49fb5. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:41:37Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USTC10777740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5421a70d724560b979348b59025dcd31f9606d50b5c2b31c0245a2fe95698b4f. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USTC10777741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e2a64133c1e0e53c9d1605ee808d49c981cf3ef21d1fabede3b90d9e36d25a4. Chain 2 (Bitcoin): anchored in block 957751 (2026-07-12T20:41:42Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USQY51153733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ec8c2ccb324a2f47d96d488ecd397ae848ff5480ecdcc228583479461fa91d7. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USQY51153734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6950668347f3757af595b2638770b1465816854a96ad74c29ff97a1c362049e. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T03:44:15Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USQY51153736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1434f6f16cd8713d7178055f6f679d8a709f14d3dc2001b6b064dfca6c800845. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USTC10777735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22822912b147ca0f9c4db69699fbd58fc9ae4c939516bdd7b16a40c6cfb7db81. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:45:36Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USQY51153717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cb94c30f162c6fca9c81a76b504deb317d27bb9bca2694bbf2db28b91bf0456. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USQY51153718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f9923c427053bd1097f1fa001c23a716a3abbbf1fad37941cf9eb9945253e63. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USQY51153719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd19860d7fdcb51866185b937ea10b95f8bbf9678c535fc5aa7c0b6ee1e3ce65f. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USQY51153720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71d0c2802538271cdcca5ef8a1b8bc9e66aa071d6cc306915d8353ae8836d08b. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USQY51153721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6abbef20aaa5afa1f76ca57465d81ed4cf25ec3cafca5e87fcf51afb855824e. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USQY51153722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9294e7d00c59f9afbfeeee48f859a9919ca49e1cef57a5dbf96888f1f772125f. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USQY51153723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09415bdce7c629b4bfaebf2fcd567e91e8b2015ec377630b08d06f62bb50bbcf. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USQY51153724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x030598b77b8396768b02cd12744032681e695bab1f8105e1661c4686bbd4cf67. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:09:54Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USQY51153725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf96d5c0b389e3ed66f2f22ac81eaf5238c918c47731a5b76ed4bbe3763c3cde5. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USQY51153726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1503b6f45436ee8c71ff342a95d9c8f60c4a0c2f207b8bb69fb2f55d2ab9bef0. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USQY51153727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28653c8fbff6afa1c48b3ca40a36d2a8945a597ae5ed86fda7e30c7dc420e0e3. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USQY51153729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9306bfb588029c327465f57f0b934afa232324cf82d480a927220db19e5667aa. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USTC10611732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8185a51c8d0bee449f3b93038a66a8f2c38754e39dd0c1bd5ffaf0db94097cca. Chain 2 (Bitcoin): anchored in block 957751 (2026-07-12T20:41:42Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USTC10611738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb50c2091cdd8f6fe85cd535d76cd687f0eb03172ec5844ff36d58cc42105d992. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T17:53:59Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USTC10611739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87a251411fece6f89928551afde75854b92e68ef66d0147a7148fc2715d0a833. Chain 2 (Bitcoin): anchored in block 957751 (2026-07-12T20:41:42Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USTC10611740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf69968e916eb466f6baf9a763ccbcef3ac852f56fa987edcafc704c716e73971. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QT5M22598032.